Can I add this to a FOWLR tank?

[concept]

We are getting a 180gal tank to set up as a FOWLR tank, we plan on adding a Picasso Trigger, Niger Trigger or Blue Throat Trigger, Dog Face Puffer and a Moon Wrasse. We currently have a Sea Hare and a Tomini Tang in another tank, can we add these into the FOWLR tank? Sea Hares are probably not as tasty as a crab or snail and can a Tomini hold his own in that tank even though he is a smaller tang?

Thanks in advance!